src/test/ui/consts/min_const_fn/mutable_borrow.stderr

error[E0723]: mutable references in const fn are unstable
  --> $DIR/mutable_borrow.rs:3:9
   |
LL |     let b = &mut a;
   |         ^
   |
   = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
   = help: add `#![feature(const_fn)]` to the crate attributes to enable

error[E0723]: mutable references in const fn are unstable
  --> $DIR/mutable_borrow.rs:12:13
   |
LL |         let b = &mut a;
   |             ^
   |
   = note: for more information, see issue https://github.com/rust-lang/rust/issues/57563
   = help: add `#![feature(const_fn)]` to the crate attributes to enable

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0723`.